<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        div {
            width: 300px;
            height: 300px;
            border: 5px solid red;
            float: left;
            margin: 5px;
        }
    </style>
</head>
<body>
    <div style="background-image: linear-gradient(pink,skyblue);float: left;">
    1
    </div>
    <div style="background-image: linear-gradient(red,pink,greenyellow);float: left;">
    2
    </div>
    <div style="background-image: repeating-linear-gradient(pink,rgb(207, 20, 170) 10%, green 10%);">
        3
    </div>
    <div style="background-image: radial-gradient(pink,green,blue);">

    </div>
</body>
</html>